The scientists in charge of NASA's Dawn spacecraft has released more high-res images of Ceres, along with information that sheds more light on what it's made of. One of the new images is another close-up of its famous Occator Crater taken from a different angle on October 16th, 920 miles above the dwarf planet. Occator is Ceres' brightest spot, and according to the Dawn team's latest research, it's because the crater is made of salt. The team believes the impact that formed the crater forced a briny liquid to seep out from underground. It froze then immediately turned into vapor, leaving a blanket of salt behind.